Provided is an improved juicer, comprising a housing (1). The housing (1) is provided with a rough squeezing chamber (11) and a fine squeezing chamber (12) which are perpendicularly communicated with each other. The fine squeezing chamber (12) is provided with a secondary juice extraction screw (14), and the rough squeezing chamber (11) is provided with a first-stage juice extraction screw (13). The fine squeezing chamber (12) is provided with a juice outlet (15), and one end of the fine squeezing chamber (12) is provided with a slag outlet (16). The other end of the fine squeezing chamber (12) is in communication with the rough squeezing chamber (11), and a filtering screen device (19) is detachably disposed at the juice outlet (15). The filtering screen device (19) comprises a base (191) and a filtering screen (192) disposed on the base (191). A mounting groove (193) is disposed at a position corresponding to the base (191) in the fine squeezing chamber (12), and the juice outlet (15) is disposed in the mou
